HOW countless OUTLETS IS over there ON A 20 AMP CIRCUIT? 2021 guide

Updated: February 23, 2021 by Annette Boyd leaving a Comment

Whenever individuals buy a brand-new home or do some renovation, they likewise rebuild electrical circuits or wiring. If doing or renewing the wirings, electrical circuits, and breakers, you may cling to a point.

You are watching: How many outlets on a 20 amp breaker

There space a lot of determinants that pat a component in the variety of outlets. Frequently, the is proposal to put ten outlets safely on a 20-amp circuit. Yet different components can impact the number and also lead to an increase or diminish in the amount. To have actually a far better understanding the the factors behind placing ten outlets, let us begin from scratch.

How countless Outlets is there on a 20 Amp Circuit?

20-amp Circuit and It’s Uses

a. Definition

Amps room the abbreviation that amperes, i m sorry is the unit of current. So, amps stated on a circuit signify its amp rating. It tells us how much or how numerous amperes of existing can circulation through a circuit.

So, a 20-amp circuit means that it has actually the capacity of pass 20 amperes of current through chin safely. 

It way this amount of existing will not cause any type of damage or blow of the circuit.

b. Dependency of Amp rating

The Amp rating of present depends ~ above the following factors:

Nature the wire offered in the circuit.The thickness that the wire.Length that wire.

c. Usage

The amp rating pointed out on a breaker is likewise useable for considering the amp rating the the circuit breaker. Moreover, we deserve to calculate the variety of outlets or receptacles top top a circuit by utilizing this amp rating. Friend can choose the no. Of tools without causing any kind of overload.

The amp rating of the circuit is likewise useful in determining the gauge number. Because that example, a 20-amp electrical circuit always works finest with a gauge the number 10 or 12. A smaller sized gauge the number 14 is also accessible in the market, yet it can carry a current load of only 15 amperes. So, that is finest to usage a 20-gauge cable for much better current flow.

In situation you usage a smaller gauge wire favor that that 14, it will reason electrical perils like fire, overheating the circuit, strength surge. The is since the smaller sized gauge cable is unable to be affected by each other the pack of present that reasons problems.

Maximum present Flow 

The amp rating discussed on a circuit is the maximum quantity of existing that flows with a circuit. The 20-amp rating ~ above an electric circuit have the right to withstand 20 amperes the electric present at maximum. It no depicts the typical or instantaneous existing flowing v a circuit.

Role the Circuit Breakers In a System

What is a circuit breaker…?

A circuit breaker is a safety machine that avoids you from any kind of electrical hazard. Circuit breakers are provided in the family members wirings to break the existing supply. Castle disconnect the passage of electric current and also block the flow of electric power in instance of an emergency.

Role that 20-Amp Circuit breaker

A 20-amp circuit breaker allows a present of a preferably of 20 amperes to circulation through it. If the lot of current exceeds this offered rating, the will immediately trip the breaker. The will aid block the flow of current.

In this way, this tripping that the breaker will avoid you from many electrical dangers that might occur due to an extra lot of current. For example, fires, power surges, and the punch of wires deserve to occur.

Guide to know the proper variety of outlets 

In general, the ten outlets are the proper variety of outlets placed on a circuit v an ampere rating the 20. To identify the exact variety of outlets, follow these steps:

an initial of all, gain to know the variety of maximum amperes that a machine can withstand. Sincerely, inspect the amp rating of every device.There is a rule ofthumb in exercise that every maker put ~ above a circuit can draw a 1.5-amp current. Therefore the number of outlets top top an electric circuit is as:

20 amps/ 1.5amps = 13.33 devices

So, you can use 13 gadgets on a circuit that 20 amps. You will think it will be safe to use 13 devices on a circuit breaker of 20 amps. Yet in actuality, the is not right. Since some devices can use more amount of power at the moment of start and stop. Every the devices active at one time can reason damage to the circuit by overheating.

That is why in actual that is proposal to use the 16-ampere power capacity that a 20-amp circuit. It method the electrical circuit that 20 amps have to bear just 80 percent load. The rest of the strength capacity permits to accommodate the power surging of some devices.

It means that a 20-amp circuit can use that is 80 percent power. That is around 16 amperes out of 20 amperes. So, let united state calculate the variety of outlets again:

15 amps/ 1.5 amps = 10 devices

So, it is for sure to usage a 20-amp circuit by placing ten gadgets on it.

Allowable Breaker Load

The nationwide Electrical existing recommends using only 16 amps top top a circuit the 20 amps. So, this is the allowable load on a breaker with 20 amps’ power. Moreover, a 20-amp electric circuit has actually a watt volume of 2400 watts.

It go not matter whether you usage lights or devices on the circuit of 20 amps’ power. The point to think about is the complete drawing power. The illustration power the a 20-amp have to not exceed the 16 amps in ~ most.

Can A 20-amp Circuit Breaker resolve The 240 Volts?

The answer to this concern is yes. It is better to usage a 240 volts circuit as contrasted to 120 volts. The factor is the a 240 volts circuit minimizes the power attract on her devices.

See more: What Does The Suffix Penia Mean S, What Does Penia Mean In Medical Terms


So, this how-to-do overview will help you to select the variety of outlets or tools allowable top top a circuit that 20-amps. If you monitor this number, friend will never ever face any type of electrical risk like over-heating, circuit blowing, etc.